Concept cars attempt to predict the future, demonstrating new technologies to make our lives safer, more comfortable and enjoyable. With the 20-20 vision afforded by hindsight, Ford's 1963 World Fair Showpiece stands out as one of the most visionary concept cars in history. Many concept cars have forecast technologies that have become standard equippe but few have forecast as many technologies so far before their time as the Ford Seattle-ite XXI. Built to symbolize the future of American technological know-how for the 1963 World’s Fair, it encompassed some remarkable concepts – interchangeable fuel cell power units, interchangeable bodies, interactive computer navigation, mapping and auto information systems, and four driving and steering wheels.